S-Shape Test Tube Stand, Model A Health & Genetics_Equipment & Supplies Sodium chloride lattice kit with

Sodium chloride lattice kit with 27 color-coded gray and green atoms plus 54 connectors for building the full cubic NaCl crystal structure in three dimensions

the classic demonstration of differential radiant-heat absorption

Hooke's-Law apparatus with a mirror-backed scale

Built for detailed cell study

Hangs a 20mm solid aluminum cube via an integrated hook for water-displacement density work

S-Shape Test Tube Stand, Model A Health & Genetics_Equipment & Supplies Sodium chloride lattice kit withAnodized 18 gauge aluminum S shape test tube stand with a three tier layout, holding four 28 mm and eight 18 mm tubes across an 83 mm tall by 160 mm long footprint.